Help needed

[habs247]

I bought it used so I believe it's been broken in. I have had it "running" for three weeks with frequent restarts because I don't know how to tune it properly (resulting in filling the cup too quickly or the opposite, level falling too low so no foam is created).

Thanks for getting back to me. Turn down the air correct?

Here's another attempt.

[Cal_stir]

yes, turn down the air, the bubbles will drop, do small adjustments and let it stabalize a few minutes, drop the bubbles to the bottom of collection cup and let it run awhile.
some foods will cause the bubbles to drop drastically and it can take a while for them to get back up, an hour or so, also if you put your hands in the water it will kill the bubbles (it affects the surface tension of the water) so you don't want to make adjs right after feeding or having hands in water, let the skimmer run and monitor it, the bubbles should rise after a while, a head of foam should start to form, tweak it so the foam is just below the top of the cup, the bubbles should be breaking half way thru the cup and the foam head should be floating on the bubbles.